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If vecA = 3hati + 4hatj and vecB = hati...

If `vecA = 3hati + 4hatj` and `vecB = hati + hatj + 2hatk` then find out unit vector along `vecA + vecB`.

A

`(4hati + 5hatj - 2hatk)/(sqrt(45))`

B

`(4hati - 5hatj - 2hatk)/(sqrt(45))`

C

`(2hati + 5hatj + 2hatk)/(sqrt(45))`

D

`(4hati + 5hatj + 2hatk)/(sqrt(45))`

Text Solution

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The correct Answer is:
D
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